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JP2953744B2 |
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JP2951242B2 |
A method for carrying out post combustion in an electric arc furnace comprising forming a preferential gas stream within the electric arc furnace, concentrating carbon monoxide within the gas stream, and providing post combustion oxygen ...
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JP2599595Y2 |
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JP2946649B2 |
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JP2946619B2 |
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JP2946575B2 |
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JP2946681B2 |
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JPH11237190A |
To enable a bottom electrode for DC arc furnace which is composed of an iron core and a refractory material to be used stably for a long period by eliminating the cracking and abrasion of the electrode resulting from the thermal spalling...
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JPH11237189A |
To prolong the lifetime of a bottom electrode of furnace by stabilizing the operation thereof. An anode electrode section 14 comprising a rod-like electrode 18, irregular refractories 21 surrounding the electrode 18, and sleeve bricks 23...
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JP2941825B2 |
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JP2940374B2 |
PURPOSE: To reduce an imbalance of impedance between respective phases, and enable adoption of a low-cost arrangement by performing delta connection of a transformer on the heating furnace side, and passing in-phase reciprocating electri...
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JP2940134B2 |
The invention provides a direct current electric arc furnace which is composed of a feeding system of direct current to the furnace, a movable electrode at the roof of the furnace, and a bottom electrode attached to the bottom of the fur...
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JP2940149B2 |
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JP2940148B2 |
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JP2936655B2 |
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JP2935595B2 |
A metallurgical vessel, esp. for use in a DC current electric arc furnace and which has a metallic electrode attached to the base of the furnace. The electrode is formed of two bar sections, one of which contacts the melt and the other p...
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JPH11211364A |
To dissolve the problem on shortage of heat, decarbonization or agitation in a specified area, by letting a fused metal electromagnetically flow from the vicinity of an arc spot to the heat-shortage area. This DC arc furnace is provided ...
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JPH11201652A |
To perform stable operation of a furnace, to make full use of a refractory for lining, and to provide an increased life. In a refractory for lining an electric type induction furnace to melt and/or refine a metal, an innermost layer (a m...
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JPH11201654A |
To modify abnormal phenomenon due to a permeating material and to fully utilize the characteristic of the material by a method wherein ceramics blaze is applied on the back of a molding material sleeve and softened and molten, to provide...
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JPH11201662A |
To prevent occurrence of serious fault or failure by providing two furnace shell earth lines of an AC electric arc furnace, measuring a current being induced in the earth line during operation of the arc furnace and delivering an abnorma...
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JPH11201653A |
To obtain a higher filling density as compared with a conventional work executed by directly vibrating filling by integral molding beforehand, to provide a lining material having low permeability to effect safe operation, and to correct ...
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JP2925446B2 |
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JP2925655B2 |
The invention relates to a method for achieving a time characteristic of a metal melt in a ladle, the heating energy being generated by at least one plasma torch. Here, various values, such as, inter alia, the mass, the specific values o...
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JP2598052Y2 |
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JP2923085B2 |
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JP2598053Y2 |
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JP2920972B2 |
PURPOSE:To prevent wear of a furnace bottom electrode and to maintain the electrode so that multiple times of meltings can be executed by supplementing electrode supplemental material of pure iron, etc., into melting part above the furna...
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JPH11183044A |
To shorten the treating time of a whole and to prevent the occurrence of partial loss to a furnace wall by a method wherein through measurement of the furnace wall of each electrode part, respective powers charged to respective electrode...
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JPH11180775A |
To produce a ceramic protective pipe low in deterioration such as generation of crack due to thermal impact corrosion due to burning atmosphere and generation of deformation due to applied load and excellent in durability. The ceramic pr...
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JP2914863B2 |
A shallow vessel (50, 52) for being horizontally disposed when containing a molten metal or metal alloy (66) for meniscus coating one side of a clean metal strip when the strip is moved vertically past one side of the vessel. The vessel ...
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JP2914674B2 |
A method of continuously melting a material comprises the steps of depositing carbon in a crucible furnace provided with a melt outlet and an inlet in an upper portion thereof, heating the carbon by electromagnetic induction heating by a...
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JP2914717B2 |
PURPOSE:To melt even a fine raw material into molten iron in good yield by packing lump coke on the bottom of a refractory melting furnace with a high-frequency heating coil arranged on its outside, heating the coke to high temp. and cha...
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JPH11176566A |
To reduce a leakage magnetic field and provide magnetic field distributions capable of ensuring sufficient heating even at an end by providing a passive coil in which a current flows by electromagnetic induction of an alternating magneti...
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JPH11176564A |
To exhibit good heat transfer properties at a high temperature and efficiently transfer heat generated from electric heat wire to molten metal by embedding the electric heat wire in an insulation ceramics with its insulation resistance a...
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JPH11173763A |
To provide a method for predicting a life of an unshaped refractory lined induction furnace for conducting a periodic maintenance of the furnace by periodically grasping a cause for influencing the life of the furnace. The method for pre...
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JP2913450B2 |
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JP2912834B2 |
PURPOSE: To improve the steelmaking method for melting scrap by using an electric furnace. CONSTITUTION: In the electric furnace, molten iron in an amount of 30-85% ratio per the whole charged material is charged together with the raw ma...
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JP2910052B2 |
PURPOSE:To facilitate power control for each bottom electrode of each furnace and to maintain three phases of a power source equilibria by providing windings for the bottom electrodes of the furnaces in the phases of a load side with the...
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JP2909529B2 |
An element heats the contents of a crucible and consists of a cylindrical hollow body (5) which is a series of meandering sections (7) each separated from the adjacent section by a slit (6). The novelty is that transitional zone from one...
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JP2910051B2 |
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JP2903915B2 |
PURPOSE:To obtain an electrode lift controller of an arc heating furnace which achieves excellent operability by simplifying the construction to facilitate adjustment. CONSTITUTION:This apparatus is provided with an average current detec...
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JP2905575B2 |
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JP2903544B2 |
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JP2596115Y2 |
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JPH11148779A |
To exhibit high function as an incinerator and fusion furnace, never to generates toxic exhaust gas or other toxic material from various wastes while its volume is reduced for easier process, by efficiently projecting electric-resistance...
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JP2896562B2 |
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JP2896563B2 |
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JPH11142066A |
To always hold a stable electric conductivity economically with a high durability. At the furnace bottom electrode 1 of a multiple pin type DC electric furnace having many steel electrode pins (contact pins), steel electrode pins 2 are e...
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JPH11142065A |
To always hold a stable electric conductivity economically with a high durability. At the furnace bottom electrode 1 of a billet type DC electric furnace having 1 to 3 steel electrode bars (billets), steel electrode bars 2 are embedded i...
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JP2895065B2 |
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